/**
 * funkce button
 * @param obj_ ukazuje na objekt IMG
 * @param mode_ true tlacitko rozsvicene, false je zhasnute
 * 
 */
function button(obj_,mode_)
{
	if(obj_.src.indexOf ('.jpg')!=-1)
	{
		if(mode_ && obj_.src.indexOf ('_on.jpg')==-1)
			obj_.src = obj_.src.replace(/.jpg/,'_on.jpg');
		if(!mode_ && obj_.src.indexOf ('_on.jpg')>0)
			obj_.src = obj_.src.replace(/_on.jpg/,'.jpg');
	}
	else if(obj_.src.indexOf ('.gif')!=-1)
	{
		if(mode_ && obj_.src.indexOf ('_on.gif')==-1)
			obj_.src = obj_.src.replace(/.gif/,'_on.gif');
		if(!mode_ && obj_.src.indexOf ('_on.gif')>0)
			obj_.src = obj_.src.replace(/_on.gif/,'.gif');
	}
	
}

/**
 * funkce otevreni obrazku
 * @param obj_ ukazuje na objekt IMG
 * @param mode_ true tlacitko rozsvicene, false je zhasnute
 * 
 */
function openBig(pic_id_) 
{ 
	x = 250;
	y = 180;
	url='/openbig.php?&url='+pic_id_;
	var scr = window.screen;
	var xorig = scr.availWidth / 2 - x / 2 ;
	var yorig = scr.availHeight /  2 - y / 2 ;
	var dialog = window.open(url,'dialog',"top="+yorig+",left="+xorig+",height="+y+",width="+x+",status=0,toolbar=no,menubar=0,location=0");
	dialog.focus();
}

function change_video_news(url_,href_)
{
	pic_ = document.getElementById('videonewsimage');
	pic_.src = 'user_images/'+url_;	
	a_ = document.getElementById('videonewslink');
	a_.href = href_;	
}

function changeactualnews()
{
	a_ = document.getElementById('videonewslink');
	a_.href = href_;	
	pic_ = document.getElementById('videonewsimage');
	pic_.src = 'user_images/'+url_;	
	
}

/**
 * funkce otevreni obrazku
 * @param obj_ ukazuje na objekt IMG
 * @param mode_ true tlacitko rozsvicene, false je zhasnute
 * 
 */
function openBig(pic_id_) 
{ 
	x = 250;
	y = 180;
	url='/openbig.php?&url='+pic_id_;
	var scr = window.screen;
	var xorig = scr.availWidth / 2 - x / 2 ;
	var yorig = scr.availHeight /  2 - y / 2 ;
	var dialog = window.open(url,'dialog',"top="+yorig+",left="+xorig+",height="+y+",width="+x+",status=0,toolbar=no,menubar=0,location=0");
	dialog.focus();
}